MAP -melcor 3320 compressors---please,please need help!!!

hey there,
my friend sent me to here to ask about help,
I bought from gearslutz member two MAP -melcor compressors to api lunchbox..this is product of Modular audio design factory who started to make moduls for api in past but already doesn´t.
he said are perfectly working...but...
these are not working at my lunchbox..
I asked him onesmore and he repeated was working ok and didn´t reply anymore....
could please help me anobody , any advice to repair it in europe or whatever..I really would appreciate it ..
thanks a lot to all!
boris carloff
www.velvetmastering.com
carloff at seznam.cz

http://static.flickr.com/88/252861948_d36595f0e8.jpg?v=0
here is image

Oooh. Those are pretty! MAP documentation is very hard to come by. I can't help. But I do want those! :wink:

isn´t any possibility about some pin change or something?the problem that signal is not going inside and nor out...altough meteres are flashing when I rotating knobs...I´m not technician only musician....
please help help!!!